A closing report typically includes the following elements:
A. Technical details of beta testing - This provides insights into the testing phase and its outcomes, crucial for evaluating the project's success.
B. Proposals for future projects - This section can help stakeholders understand lessons learned and potential areas for future development.
C. All messages exchanged by the team - While communication records can be useful, including all messages may be excessive. A summary of key communications might be more appropriate.
D. Sections for each major phase of the project - This helps in documenting progress and outcomes, providing a clear structure for the report.
In summary, the most relevant components would likely be A, B, and D. C might not be necessary in full but could be summarized.